Booleans: prisms along one direction combined exactly in 2D (overlapping holes in plates; equal sections stacked end to end), bodies touching along one whole face stitched (a part joined with its mirror image), pushing coincident faces works with any plane-and-cylinder neighbours

Oracle: 60/76.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AS5Tn3xieewUSg3uxrMVdL

crates/kernel/src/lib.rs

@@ -26,6 +26,7 @@ mod offset;
 mod ops;
 mod polybool;
 mod polyhedron;
+mod prism;
 mod sew;
 mod step;
 mod step_in;